Dear brothers,
i am working on preparation of polymer membrane. I tested PEG to make my membrane flexible but it doesn't work. i need PVDF( Polyvinylidene fluoride) and PES(polytehr sulfone) ONLY 1 gm or less to test whether it works or not. presently i a working in Saudi arabia for some time..Any one who heve these polymers and is recently working in saudi arabia can help me in this regard .Thanks